EP 1269598 B1 20090923 - DISTRIBUTED INTERNAL FAULT BYPASS IN A MODULAR UNINTERRUPTIBLE POWER SUPPLY
Title (en)
DISTRIBUTED INTERNAL FAULT BYPASS IN A MODULAR UNINTERRUPTIBLE POWER SUPPLY
Title (de)
VERTEILTE INTERNE FEHLERÜBERBRÜCKUNG IN EINER MODULAREN UNTERBRECHUNGSFREIEN STROMVERSORGUNG
Title (fr)
ALIMENTATION D'ENERGIE MODULAIRE A SYSTEME UPS : CIRCUIT DE DERIVATION INTERNE REPARTI INTERVENANT EN CAS DE DEFAILLANCE
Publication
Application
Priority
- US 0109786 W 20010327
- US 53805100 A 20000329
Abstract (en)
[origin: US6292379B1] A modular uninterruptible power supply is presented having multiple power modules installed therein. Each of the individual power modules contains an internal bypass circuit sized for its particular power module. Preferably internal bypass circuitry is sized to carry two per unit load. The system and method of the invention also includes internal control circuitry for each of the modular power modules that control transitions between the inverter and bypass modes of operation. This transition control is coordinated with the other controllers for the other modular power modules installed in the uninterruptible power supply. Both the high speed communication bus and a high level interrupt line are utilized to minimize the transfer break time between different modes of operation while ensuring that the inverter is never paralleled with the utility line voltage. To further minimize this transfer time, a solid state switching circuit is utilized to provide the initialization between operational modes. To maximize the efficiency during the bypass mode of operation, and electromechanical relay is utilized in coordinated operation with the solid state switching device to provide long-term power requirements during the bypass mode.
IPC 8 full level
H02J 1/00 (2006.01); H02J 3/38 (2006.01); H02J 9/06 (2006.01)
CPC (source: EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 6292379 B1 20010918; AU 4950001 A 20011008; DE 60139986 D1 20091105; EP 1269598 A2 20030102; EP 1269598 B1 20090923; WO 0173915 A2 20011004; WO 0173915 A3 20020516
DOCDB simple family (application)
US 53805100 A 20000329; AU 4950001 A 20010327; DE 60139986 T 20010327; EP 01922735 A 20010327; US 0109786 W 20010327